Overview
Marsh Creek Site 2 is a rocky bottom stream with a low flow. While the flow was low during the site visits, it was clear that the water rose high from the steep incline of the banks and was cutting downward.The stream displayed major concerns to the students including heavy erosion, incising, a strong odor, and a filmy coating on the stream bottom. Students completed a cross section of the stream once, and tested the velocity multiple times each visit.
In-StreamCharacteristics
The stream was made up of an assortment of riffles, runs, and pools. The riffles were most common due to the low flow and rocky bottom. The runs were more visible after the rain. The pools could be found close to the banks where niches had been carved into. The strong sewage odor, and coating on the rocks, could be linked to the brick and mortar storm drain. The bricks came apart, and a few were found in the stream. Also, an eight inch cast iron sewage pipe could cause problems due to leaks and rust. The issues mentioned like undercutting, incising, and erosion had a significant impact on the urban ecology.
Video of stream characteristics including exposed sewer pipe which crosses the stream.
Physical Measurements
To create the cross section, the stream was measured from bank to bank, and the depth was recorded in increments. The chart below indicates the steepness of the top of the banks to the water level.
Visual recording of exposed metal sewer pipe crossing stream bottom
Marsh Creek Site 2Stream Characteristics
OverviewMarsh Creek Site 2 is a rocky bottom stream with a low flow. While the flow was low during the site visits, it was clear that the water rose high from the steep incline of the banks and was cutting downward.The stream displayed major concerns to the students including heavy erosion, incising, a strong odor, and a filmy coating on the stream bottom. Students completed a cross section of the stream once, and tested the velocity multiple times each visit.
In-Stream Characteristics
The stream was made up of an assortment of riffles, runs, and pools. The riffles were most common due to the low flow and rocky bottom. The runs were more visible after the rain. The pools could be found close to the banks where niches had been carved into. The strong sewage odor, and coating on the rocks, could be linked to the brick and mortar storm drain. The bricks came apart, and a few were found in the stream. Also, an eight inch cast iron sewage pipe could cause problems due to leaks and rust. The issues mentioned like undercutting, incising, and erosion had a significant impact on the urban ecology.
Video of stream characteristics including exposed sewer pipe which crosses the stream.
Physical Measurements
To create the cross section, the stream was measured from bank to bank, and the depth was recorded in increments. The chart below indicates the steepness of the top of the banks to the water level.
Visual recording of exposed metal sewer pipe crossing stream bottom
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